package com.culture.bootdemo.utils;

import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import org.apache.commons.io.FileUtils;
import org.apache.commons.lang.StringUtils;
import org.apache.http.HttpEntity;
import org.apache.http.HttpHeaders;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.*;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.conn.ssl.DefaultHostnameVerifier;
import org.apache.http.conn.util.PublicSuffixMatcher;
import org.apache.http.conn.util.PublicSuffixMatcherLoader;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.File;
import java.io.IOException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

public class HttpClientUtil {

    private Logger logger = LoggerFactory.getLogger(HttpClientUtil.class);

    private RequestConfig requestConfig = RequestConfig.custom()
            .setSocketTimeout(60000)
            .setConnectTimeout(60000)
            .setConnectionRequestTimeout(60000)
            .build();

    private static HttpClientUtil instance = null;

    public HttpClientUtil() {
    }

    private static HttpClientUtil getInstance() {
        if (instance == null) {
            instance = new HttpClientUtil();
        }
        return instance;
    }


    /**
     * 发送 get请求
     *
     * @param httpUrl
     */
    public String sendHttpGet(String httpUrl) {
        HttpGet httpGet = new HttpGet(httpUrl);// 创建get请求
        return sendHttpGet(httpGet);
    }

    /**
     * 带参数get请求
     *
     * @param httpUrl
     * @param param
     * @return
     */
    public String sendHttpGet(String httpUrl, Map<String, Object> param) {
        HttpGet httpGet = new HttpGet(urlMapParams(httpUrl, param));// 创建get请求
        return sendHttpGet(httpGet);
    }


    /**
     * 发送 get请求Https
     *
     * @param httpUrl
     * @throws Exception
     */
    public String sendHttpsGet(String httpUrl, String auth, String imei, String phone, String mac) throws Exception {
        httpUrl = httpUrl + "?tag=all";
        if (StringUtils.isNotBlank(imei)) {
            httpUrl = httpUrl + "&imei=" + imei;
        }
        if (StringUtils.isNotBlank(phone)) {
            httpUrl = httpUrl + "&phone=" + phone;
        }
        if (StringUtils.isNotBlank(mac)) {
            httpUrl = httpUrl + "&mac=" + mac;
        }
        logger.info("jpush query url {}", httpUrl);

        return sendHttpsGet(httpUrl, auth);
    }

    public String sendHttpsGet(String httpUrl) {
        HttpGet httpGet = new HttpGet(httpUrl);// 创建get请求
        return sendHttpsGet(httpGet);
    }


    /**
     * 发送 post请求
     *
     * @param httpUrl 地址
     */
    public String sendHttpPost(String httpUrl) {
        HttpPost httpPost = new HttpPost(httpUrl);// 创建httpPost
        return sendHttpPost(httpPost);
    }

    /**
     * 发送 post请求
     *
     * @param httpUrl 地址
     * @param params  参数(格式:key1=value1&key2=value2)
     */
    public String sendHttpPost(String httpUrl, String params) {
        HttpPost httpPost = new HttpPost(httpUrl);// 创建httpPost
        try {
            //设置参数
            StringEntity stringEntity = new StringEntity(params, "UTF-8");
            stringEntity.setContentType("application/x-www-form-urlencoded");
            httpPost.setEntity(stringEntity);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return sendHttpPost(httpPost);
    }

    /**
     * 发送 post请求
     *
     * @param httpUrl 地址
     * @param xml
     */
    public String sendHttpPostXml(String httpUrl, String xml) {
        HttpPost httpPost = new HttpPost(httpUrl);// 创建httpPost
        try {
            //设置参数
            StringEntity stringEntity = new StringEntity(xml, "UTF-8");
            stringEntity.setContentType("application/xml;charset=utf-8");
            httpPost.setEntity(stringEntity);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return sendHttpPost(httpPost);
    }


    /**
     * 发送 post请求
     *
     * @param httpUrl 地址
     * @param param
     */
    public String sendHttpPostForm(String httpUrl, String param) {
        HttpPost httpPost = new HttpPost(httpUrl);
        try {
            //设置参数
            StringEntity stringEntity = new StringEntity(param, "UTF-8");
            stringEntity.setContentType("multipart/form-data;charset=utf-8");
            httpPost.setEntity(stringEntity);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return sendHttpPost(httpPost);
    }

    /**
     * 发送 post请求
     *
     * @param httpUrl 地址
     * @param maps    参数
     */
    public String sendHttpPost(String httpUrl, Map<String, String> maps) {
        HttpPost httpPost = new HttpPost(httpUrl);// 创建httpPost
        // 创建参数队列
        List<NameValuePair> nameValuePairs = new ArrayList<>();
        for (String key : maps.keySet()) {
            nameValuePairs.add(new BasicNameValuePair(key, maps.get(key)));
        }
        try {
            httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs, "UTF-8"));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return sendHttpPost(httpPost);
    }

    /**
     * 发送 post请求
     */
    public String sendHttpPost(String httpUrl, JSONObject body, String auth) {
        HttpPost httpPost = new HttpPost(httpUrl);// 创建httpPost
        httpPost.setHeader(HttpHeaders.CONTENT_TYPE, "application/json");
        if (auth != null)
            httpPost.setHeader(HttpHeaders.AUTHORIZATION, auth);
        // 创建参数队列
        try {
            httpPost.setEntity(new StringEntity(body.toJSONString(), "UTF-8"));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return sendHttpPost(httpPost);
    }

    public String sendHttpPost(String httpUrl, JSONArray body, String auth) {
        HttpPost httpPost = new HttpPost(httpUrl);// 创建httpPost
        httpPost.setHeader(HttpHeaders.CONTENT_TYPE, "application/json");
        if (auth != null)
            httpPost.setHeader(HttpHeaders.AUTHORIZATION, auth);
        // 创建参数队列
        try {
            httpPost.setEntity(new StringEntity(body.toJSONString(), "UTF-8"));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return sendHttpPost(httpPost);
    }


    /**
     * 发送 post请求
     *
     * @param httpUrl 地址
     * @param maps    参数
     * @param auth    认证头
     */
    public String sendHttpPost(String httpUrl, Map<String, String> maps, String auth) {
        HttpPost httpPost = new HttpPost(httpUrl);// 创建httpPost
        httpPost.setHeader(HttpHeaders.AUTHORIZATION, auth);
        // 创建参数队列
        List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
        for (String key : maps.keySet()) {
            nameValuePairs.add(new BasicNameValuePair(key, maps.get(key)));
        }
        try {
            httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs, "UTF-8"));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return sendHttpPost(httpPost);
    }

    /**
     * 发送 post请求
     *
     * @param httpUrl 地址
     * @param maps    参数
     */
    public String sendHttpPost(String httpUrl, Map<String, String> maps, String auth, String cookies) {
        HttpPost httpPost = new HttpPost(httpUrl);// 创建httpPost
        if (StringUtils.isNotBlank(auth)) {
            httpPost.setHeader(HttpHeaders.AUTHORIZATION, auth);
        }
        if (StringUtils.isNotBlank(cookies)) {
            httpPost.setHeader("Cookie", cookies);
        }
        // 创建参数队列
        List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
        for (String key : maps.keySet()) {
            nameValuePairs.add(new BasicNameValuePair(key, maps.get(key)));
        }
        try {
            httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs, "UTF-8"));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return sendHttpPost(httpPost);
    }


    /**
     * 发送Post请求
     *
     * @param httpPost
     * @return
     */
    private String sendHttpPost(HttpPost httpPost) {
        CloseableHttpClient httpClient = null;
        CloseableHttpResponse response = null;
        HttpEntity entity = null;
        String responseContent = null;
        try {
            // 创建默认的httpClient实例.
            httpClient = HttpClients.createDefault();
            httpPost.setConfig(requestConfig);
            // 执行请求
            response = httpClient.execute(httpPost);
            entity = response.getEntity();
            responseContent = EntityUtils.toString(entity, "UTF-8");
            logger.info("url:{} response:{}", httpPost.getURI(), responseContent);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                // 关闭连接,释放资源
                if (response != null) {
                    response.close();
                }
                if (httpClient != null) {
                    httpClient.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return responseContent;
    }


    private String sendHttpsGet(String url, String auth) throws Exception {
        HttpClient client = HttpClients.custom().build();
        HttpUriRequest request = RequestBuilder.get().setUri(url)
                .setHeader(HttpHeaders.CONTENT_TYPE, "application/json").setHeader(HttpHeaders.AUTHORIZATION, auth).build();
        HttpResponse response = client.execute(request);
        String result = EntityUtils.toString(response.getEntity());
        // System.out.println(result);
        return result;
    }

    /**
     * 发送Get请求
     */
    private String sendHttpGet(HttpGet httpGet) {
        CloseableHttpClient httpClient = null;
        CloseableHttpResponse response = null;
        HttpEntity entity = null;
        String responseContent = null;
        try {
            // 创建默认的httpClient实例.
            httpClient = HttpClients.createDefault();
            httpGet.setConfig(requestConfig);

            // 执行请求
            response = httpClient.execute(httpGet);
            entity = response.getEntity();
            responseContent = EntityUtils.toString(entity, "UTF-8");
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                // 关闭连接,释放资源
                if (response != null) {
                    response.close();
                }
                if (httpClient != null) {
                    httpClient.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        logger.info("url:{} response:{}", httpGet.getURI(), responseContent);
        return responseContent;
    }

    /**
     * 发送Get请求Https
     */
    private String sendHttpsGet(HttpGet httpGet) {
        CloseableHttpClient httpClient = null;
        CloseableHttpResponse response = null;
        HttpEntity entity = null;
        String responseContent = null;
        try {
            // 创建默认的httpClient实例.
            PublicSuffixMatcher publicSuffixMatcher = PublicSuffixMatcherLoader.load(new URL(httpGet.getURI().toString()));
            DefaultHostnameVerifier hostnameVerifier = new DefaultHostnameVerifier(publicSuffixMatcher);
            httpClient = HttpClients.custom().setSSLHostnameVerifier(hostnameVerifier).build();
            httpGet.setConfig(requestConfig);
            // 执行请求
            response = httpClient.execute(httpGet);
            entity = response.getEntity();
            responseContent = EntityUtils.toString(entity, "UTF-8");
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                // 关闭连接,释放资源
                if (response != null) {
                    response.close();
                }
                if (httpClient != null) {
                    httpClient.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return responseContent;
    }


    /**
     * 利用 commonio 库下载文件，依赖Apache Common IO ，官网 https://commons.apache.org/proper/commons-io/
     *
     * @param url      (官网：www.fhadmin.org)
     * @param saveDir
     * @param fileName
     */
    public static void downloadByApacheCommonIO(String url, String saveDir, String fileName) {
        try {
            FileUtils.copyURLToFile(new URL(url), new File(saveDir, fileName));
        } catch (IOException e) {
            e.printStackTrace();
        }
    }


    public static String getHttpPostResponseBody(String url, List<NameValuePair> params) {
        String result = "";
        HttpClient httpClient = HttpClients.createDefault();
        HttpPost httpPost = new HttpPost(url);
        System.out.println("url:" + url);
        for (NameValuePair nameValuePair : params) {
            System.out.println(nameValuePair.getName() + ":" + nameValuePair.getValue());
        }
        try {
            httpPost.setEntity(new UrlEncodedFormEntity(params, "UTF-8"));
            HttpResponse response = httpClient.execute(httpPost);
            if (response.getStatusLine().getStatusCode() == 200) {// 如果状态码为200,就是正常返回
                result = EntityUtils.toString(response.getEntity());
                System.out.println(result);
            } else {
                System.out.println();
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            httpPost.releaseConnection();
        }
        return result;
    }

    /**
     * 拼装参数
     *
     * @param url
     * @param params
     * @return
     */
    private String urlMapParams(String url, Map<String, Object> params) {
        if (null == params || params.isEmpty()) {
            return url;
        }

        url = url.concat("?");
        for (Map.Entry<String, Object> entry : params.entrySet()) {
            if (entry.getValue() != null && entry.getValue() != "") {
                url = url.concat(entry.getKey()).concat("=").concat(entry.getValue().toString()).concat("&");
            }
        }
        if (url.endsWith("&") || url.endsWith("?")) {
            url = url.substring(0, url.length() - 1);
        }
        return url;
    }

}

